JCC Lighting Catalogue Issue 35

Fire-rated regulations

Fire-rated downlight regulations are in place to protect buildings from the fire risk created when a hole is drilled to fit a downlight. Products are designed to seal this hole, meaning the fire is slowed down, however they do not block the fire completely. Instead, they maintain a level of fire resistance similar to the original ceiling, enhancing overall safety by combining functional lighting with essential protective measures. Fire-rated downlights are most commonly rated at 30, 60 or 90 minutes, allowing occupants time to get to safety. Plasterboard thickness and joist spacing within the ceiling vary depending on the required level of fire rating. These are generally determined by building height and use.

MINIMUM PERIODS OF FIRE RESISTANCE FOR DOMESTIC PROPERTIES

M,1. &(,/,1*6 600mm joist centres Single layer 12.5mm plasterboard

M,1. &(,/,1*6 600mm joist centres Double layer 15mm plasterboard

M,1 &(,/,1*6 450mm joist centres Double layer 15mm plasterboard

58